The whiskumer-based differential is classified as a high friction differential type. The viscous coupler is based on a change in the properties of the special heater gel which results from a peer scuffle. History of inventions
History of inventions
Wyskomouft was invented in 1917 by American Melvin North. The mechanism was not of particular interest, and it was only 1964 that the vehicle was designed to be used in the construction of the vehicle. For the first time in the construction of the interaxial differential, the whiskumuft appeared on the Interceptor FF car of the English company Jensen. The device has finally been evaluated in dignity and has been widely used in the folding, cross-axle, and wheel-wheelers with a permanent full wheel drive on all wheels.
The use of a Whiskey-driven lock has created the term "parketnik", that is, a Jeep that should not be moved from an asphalt road
As a self-contained differential, the whiskey differential was installed on the Jeep Grand Cherokee, Range Rover HSE, Toyota Rav4, Subaru Impreza.
What's the differential need of a lock?
In the direction of rotation, the inner and outer wheels on the same axle pass the different direction. If the two wheels are rigidly connected to each other, forcing the wheel to move strictly in synchronously, the wheel will slip through the inner path. As a result, the load on the transmission will increase, manageability will deteriorate, the wear of rubber will increase significantly, fuel consumption will increase. Differential is used to provide differential rotational speeds on the driving axle.
The differential that distributes the torque between the wheels on one axle is called a cross-wheel, and the time between the bridges is referred to as the cross-axle.
The properties of temples are widely used not only in the differential locking design, but also in the mechanical fan of the drive-pulley refrigeration system
But applying a differential in a car to a number of positive effects has also caused a number of disadvantages. The main thing is to reduce the ability of the car to move on the off-road and on ice. If one of the wheels of the car is on the ice and the other on the asphalt, the car will be moved with the usual ("open") car A differential, especially rear-wheel drive, is likely to fail. The wheel on the ice will rotate at a high speed and the second wheel will remain stationary. In order to combat this factor, a number of locks of different design were invented.
Design and working principle of a whisky based self-balancing
In order to improve the grip of the wheels with the road in difficult conditions and off-road, car manufacturers have begun to introduce various types of lockable and self-locking differential. One option is the self-balancing difference of the whiskies.
The principle of the work of the temples is based on the ability of a special silicone fluid to expand during heating and to thicken.
The Viskomoft is a round flat, flat-pressure disc set inside the hermetic shell. There are two types of disks in the package that are connected to the leading and driven shaft, respectively. There are holes and small protruths on the surface of the disks. The disc package is packed in such a way that the known and leading drives alternate between themselves and are at a low distance. The inside of the coupla is filled with silicone gel.
The whiskey jacket is called a gallows gel. It can be purchased in a specialized shop for the sale of oils
With uniform motion of the leading and driven gross discs, the temples rotate at the same speed, without mixing the silicone fluid. When the speed of one of the wheels increases, intensive mixing and opening of the gel occurs, resulting in increased viscosity. The power of friction between the molecules of a liquid tries to equate the rotation speed of the disks and the associated gross speed. With a high difference of speed, the fluid becomes very viscous, with the muft being blocked almost completely, and the torque transmitted from the leader to the driven shaft through the plate's plate reaches the maximum.
Plus and Minus of Design
The viscous properties of the fluid in the body of the muft depend on the intensity of its mixing, so in practice it is extremely difficult to build a schedule for the reinforcement of the lock. For this reason, the self-balancing whiskoff is quite unpredictable and unreliable.
The Vysomoft is inertia-prone, prone to overheating, and when the vehicle is stopped, the anti-lock braking system is adversely affected. In addition, as the mileage increased, the gel is gradually losing its properties, and after a long period of use, the expensive coupler has to be changed.
The efficiency of the temples depends on the diameter of the discs and the volume of silicone fluid in the body, so installing such a differential increases the dimensions of the driving bridge and reduces the road light.
The advantages of the temples are simple design and lack of maintenance-an internal cavity is leak-proof and does not require liquids or liquids.